Coordination of unlike categories, e.g., at the complement position of predicative be,
has been a problem for grammar formalisms and NLP systems. Unlike all
previous approaches, this paper challenges the very assumption that such
coordination is of unlike categories, by introducing a new category
that covers certain NPs, AdjP, etc., on the semantic ground. The paper
argues that such a move does not introduce new problems; all the
problems discussed in the paper must be dealt with by traditional
approaches as well. The proposed approach can not only simplify the
coordination process but also shed some new light on the syntax-semantic
interface for major nominal categories.

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